polylang / include / links-permalinks.php

links-permalinks.php in Polylang 2.8.2, at include/links-permalinks.php

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1	<?php
2	/**
3	* @package Polylang
4	*/
5
6	/**
7	* Links model base class when using pretty permalinks
8	*
9	* @since 1.6
10	*/
11	abstract class PLL_Links_Permalinks extends PLL_Links_Model {
12	public $using_permalinks = true;
13	protected $index = 'index.php'; // Need this before $wp_rewrite is created, also hardcoded in wp-includes/rewrite.php
14	protected $root, $use_trailing_slashes;
15	protected $always_rewrite = array( 'date', 'root', 'comments', 'search', 'author' );
16
17	/**
18	* Constructor
19	*
20	* @since 1.8
21	*
22	* @param object $model PLL_Model instance
23	*/
24	public function __construct( &$model ) {
25	parent::__construct( $model );
26
27	// Inspired by wp-includes/rewrite.php
28	$permalink_structure = get_option( 'permalink_structure' );
29	$this->root = preg_match( '#^/*' . $this->index . '#', $permalink_structure ) ? $this->index . '/' : '';
30	$this->use_trailing_slashes = ( '/' == substr( $permalink_structure, -1, 1 ) );
31	}
32
33	/**
34	* Returns the link to the first page when using pretty permalinks
35	*
36	* @since 1.2
37	*
38	* @param string $url url to modify
39	* @return string modified url
40	*/
41	public function remove_paged_from_link( $url ) {
42	/**
43	* Filter an url after the paged part has been removed
44	*
45	* @since 2.0.6
46	*
47	* @param string $modified_url The link to the first page
48	* @param string $original_url The link to the original paged page
49	*/
50	return apply_filters( 'pll_remove_paged_from_link', preg_replace( '#/page/[0-9]+/?#', $this->use_trailing_slashes ? '/' : '', $url ), $url );
51	}
52
53	/**
54	* Returns the link to the paged page when using pretty permalinks
55	*
56	* @since 1.5
57	*
58	* @param string $url url to modify
59	* @param int $page
60	* @return string modified url
61	*/
62	public function add_paged_to_link( $url, $page ) {
63	/**
64	* Filter an url after the paged part has been added
65	*
66	* @since 2.0.6
67	*
68	* @param string $modified_url The link to the paged page
69	* @param string $original_url The link to the original first page
70	* @param int $page The page number
71	*/
72	return apply_filters( 'pll_add_paged_to_link', user_trailingslashit( trailingslashit( $url ) . 'page/' . $page, 'paged' ), $url, $page );
73	}
74
75	/**
76	* Returns the home url
77	*
78	* @since 1.3.1
79	*
80	* @param object $lang PLL_Language object
81	* @return string
82	*/
83	public function home_url( $lang ) {
84	return trailingslashit( parent::home_url( $lang ) );
85	}
86
87	/**
88	* Returns the static front page url
89	*
90	* @since 1.8
91	*
92	* @param object $lang
93	* @return string
94	*/
95	public function front_page_url( $lang ) {
96	if ( $this->options['hide_default'] && $lang->slug == $this->options['default_lang'] ) {
97	return trailingslashit( $this->home );
98	}
99	$url = home_url( $this->root . get_page_uri( $lang->page_on_front ) );
100	$url = $this->use_trailing_slashes ? trailingslashit( $url ) : untrailingslashit( $url );
101	return $this->options['force_lang'] ? $this->add_language_to_link( $url, $lang ) : $url;
102	}
103
104	/**
105	* Prepares rewrite rules filters
106	*
107	* @since 1.6
108	*/
109	public function get_rewrite_rules_filters() {
110	// Make sure we have the right post types and taxonomies
111	$types = array_values( array_merge( $this->model->get_translated_post_types(), $this->model->get_translated_taxonomies(), $this->model->get_filtered_taxonomies() ) );
112	$types = array_merge( $this->always_rewrite, $types );
113
114	/**
115	* Filter the list of rewrite rules filters to be used by Polylang
116	*
117	* @since 0.8.1
118	*
119	* @param array $types the list of filters (without '_rewrite_rules' at the end)
120	*/
121	return apply_filters( 'pll_rewrite_rules', $types );
122	}
123	}
124